<template>
  <div class="login_container">
      <div class="login_box">
      <!--  头像区域  -->
        <div class="avatar_box">
          <img src="../assets/logo.png" alt="">
        </div>
      <!--  登录表单区域  -->
        <el-form label-width="0px" class="login_form" :model="loginForm" :rules="loginFormRules" ref="loginFormRef" >
          <!--  用户名   -->
          <el-form-item prop="username">
            <el-input v-model="loginForm.username" prefix-icon="iconfont icon-user"></el-input>
          </el-form-item>
          <!--  密码   -->
          <el-form-item prop="password">
            <el-input v-model="loginForm.password" prefix-icon="iconfont icon-3702mima" type="password"></el-input>
          </el-form-item>
          <!--  按钮   -->
          <el-form-item class="btns">
            <el-button type="primary" @click="login" >登录</el-button>
            <el-button type="info" @click="resetLoginForm">重置</el-button>
          </el-form-item>
        </el-form>
      </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      //登录表单的数据绑定对象
      loginForm: {
        username: 'admin',
        password: '123456'
      },
      //表单验证规则对象
      loginFormRules: {
        username: [
          { required: true, message: "请输入登录账号", trigger: "blur" },
          { min: 3, max: 10, message: "长度在3-10位之间", trigger: "blur" }
        ],
        password: [
          { required: true, message: "请输入登录密码", trigger: "blur" },
          { min: 6, max: 15, message: "长度在6-15位之间", trigger: "blur" }
        ]
      }
    }
  },
  methods: {
    //重置表单
    resetLoginForm() {
      this.$refs.loginFormRef.resetFields()
    },
    login() {
      this.$refs.loginFormRef.validate( async (valid) => {
        if (!valid) return
        const { data: res } = await this.$http.post('login', this.loginForm)
        if (res.meta.status !== 200) return this.$message.error("用户名或密码错误")
        this.$message.success("登录成功")
        window.sessionStorage.setItem('token', res.data.token)
        await this.$router.push('/home')
      })
    }
  }
}
</script>

<style scoped lang="less" >
  .login_container {
    background-color: #2b4b6b;
    height: 100%;
  }

  .login_box {
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);

    .avatar_box {
      height: 130px;
      width: 130px;
      border: 1px solid #eee;
      border-radius: 50%;
      padding: 10px;
      box-shadow: 0 0 10px #ddd;
      position: absolute;
      left: 50%;
      transform: translate(-50%, -50%);
      background-color: #fff;

      img {
        width: 100%;
        height: 100%;
        border-radius: 50%;
        background-color: #eee;
      }
    }
  }

  .login_form {
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
  }

  .btns {
    display: flex;
    justify-content: flex-end;
  }
</style>
